The VPD Thermometer from AC Infinity is a precision laser thermometer gun engineered for advanced growers seeking accurate environmental insights. This innovative device instantly measures vapor pressure deficit (VPD) for both air and plant leaves, along with ambient temperature, leaf temperature, and relative humidity, all critical metrics for optimizing plant health and nutrient uptake. Unlike the brand’s other devices, such as the Smart Thermo-Hygrometer B2 with Integrated Sensor and Mini Smart Thermo-Hygrometer A1 with 12' Sensor, it’s the first handheld tool of its kind that captures true VPD data to help growers fine‑tune climate conditions for peak performance. Equipped with infrared technology and 12‑point laser positioning, it delivers precise measurements over a wide range of distances, while automatically saving historical readings so you can monitor climate shifts over time.